Drone footage has captured killer whales breaking off stalks of kelp and rubbing the pieces on other orcas, a rare case of ...

Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...

To start a kelp-based grooming session, an orca places the bull kelp stipe on its face and nuzzles against another killer ...

For the first time, researchers say they have captured footage of killer whales making tools out of seaweed to seemingly ...

Orcas in the North Pacific have been seen "massaging" each other - rubbing pieces of kelp between their bodies. Using drones, researchers filmed the animals selecting and biting off the kelp, then ...

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

Southern resident killer whales are using kelp for what scientists suspect are both hygienic and social purposes.

Although orcas around the world are all categorized as a single species, they don't really behave as one. Distinct populations, called ecotypes, have their own habitats, their own languages, their own ...

Orcas make seaweed tools in order to scratch each other’s backs, a study has suggested. The animals, also known as killer whales, were observed detaching lengths of seaweed and massaging each ...

The two keep the kelp pressed between their bodies as they wiggle against each other for up to 12 minutes at a time. At first, the researchers thought this might be a form of play.

Orcas off the west coast of North America are grooming each other with kelp, in a rare sighting of marine mammals manufacturing and using tools. For several years, scientists have been keenly ...

Orcas in the North Pacific have been seen "massaging" each other - rubbing pieces of kelp between their bodies. Using drones, researchers filmed the animals selecting and biting off the kelp, then ...